The 6ES7924-2AM20-0BA0 is a connection module for the SIMATIC S7-1500 system, designed to interface with digital I/O modules. It provides 40 screw-type terminals — 32 dedicated to I/O signals plus 4 for L+ and 4 for M — all on a single terminal level at the top of the module. Rated at 1 A per terminal with a 2 A total current limit, it handles the typical signal and small-load wiring for a digital I/O group.
Mounts on either 35 mm or 15 mm DIN rail, in any position, with no end cover plate required. Screwdriver blade width of 3.5 mm matches standard terminal tools; the screw terminals accept stranded wire from 0.5 to 2.5 mm². Maximum cable length between the front connector module and this connection module is 30 m.
Electrical and environmental ratings
Rated for 24 V DC (maximum 28.8 V DC). Overvoltage category II, pollution degree 2. The enclosure material carries a UL 94 V-1 flammability rating. No integrated disconnector, no PE connection, and no shield connection — this is a pure wiring breakout module.